:root {
  --primary: #ff7a45;
  --primary-dark: #e8590c;
  --primary-light: #ffb38a;
  --primary-soft: #fff0e8;
  --bg: #fffaf6;
  --bg-alt: #ffffff;
  --text: #2b2b2b;
  --text-strong: #1f1f1f;
  --text-muted: #5a5a5a;
  --text-faint: #777;
  --text-ghost: #999;
  --border: #ffe3d3;
  --border-soft: #ffd0b5;
  --card-bg: #ffffff;
  --glass-bg: rgba(255, 250, 246, 0.72);
  --glass-border: rgba(255, 227, 211, 0.7);
  --shadow-sm: 0 4px 14px rgba(255, 122, 69, 0.08);
  --shadow-md: 0 12px 30px rgba(255, 122, 69, 0.16);
  --shadow-lg: 0 20px 50px rgba(255, 122, 69, 0.22);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 179, 138, 0.22), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(255, 122, 69, 0.14), transparent 46%),
    radial-gradient(circle at 50% 100%, rgba(255, 208, 181, 0.18), transparent 55%);
  pointer-events: none;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary);
}

img,
svg {
  max-width: 100%;
  display: block;
}

::selection {
  background: var(--primary);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
  color: var(--primary-dark);
  letter-spacing: 0.5px;
  transition: transform var(--transition);
}

.logo:hover {
  color: var(--primary-dark);
  transform: translateY(-1px);
}

.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #ff7a45, #ffb38a);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(255, 122, 69, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
}

.logo:hover .logo-badge {
  transform: rotate(-8deg) scale(1.06);
  box-shadow: 0 10px 22px rgba(255, 122, 69, 0.45);
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  position: relative;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transition: width var(--transition);
}

.nav a:hover {
  color: var(--primary-dark);
}

.nav a:hover::after {
  width: 100%;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-box {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: var(--card-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 122, 69, 0.14);
}

.search-box input {
  border: 0;
  outline: 0;
  padding: 8px 12px;
  width: 150px;
  font-size: 14px;
  background: transparent;
  color: var(--text);
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--text-ghost);
}

.search-box button {
  border: 0;
  background: linear-gradient(135deg, #ff7a45, #ff9466);
  color: #fff;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  font-weight: 600;
  transition: filter var(--transition), transform var(--transition);
}

.search-box button:hover {
  filter: brightness(1.06);
}

.search-box button:active {
  transform: scale(0.96);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  font-size: 16px;
  color: var(--text);
  transition: background var(--transition), border-color var(--transition);
}

.menu-toggle:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px;
  font-size: 13px;
  color: var(--text-ghost);
}

.breadcrumb a {
  color: var(--text-ghost);
}

.breadcrumb a:hover {
  color: var(--primary-dark);
}

.breadcrumb span {
  color: var(--text-muted);
}

/* ===== Hero ===== */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 20px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

.hero h1 {
  font-size: 38px;
  line-height: 1.35;
  color: var(--text-strong);
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.hero h1 span {
  background: linear-gradient(120deg, #ff7a45, #ff9a5c 45%, #ffb38a);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--primary-dark);
}

.hero p {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  will-change: transform;
}

.btn-primary {
  background: linear-gradient(135deg, #ff7a45, #ff9466);
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 122, 69, 0.32);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #e8590c, #ff7a45);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(255, 122, 69, 0.42);
}

.btn-ghost {
  border: 1px solid var(--border-soft);
  color: var(--primary-dark);
  background: var(--card-bg);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.stat-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.2;
}

.stat-label {
  font-size: 13px;
  color: var(--text-faint);
}

/* ===== Carousel ===== */
.carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition), transform var(--transition);
}

.carousel:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.carousel-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide {
  min-width: 100%;
  padding: 34px 28px;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  min-height: 280px;
  position: relative;
  overflow: hidden;
}

.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.28), transparent 55%);
  pointer-events: none;
}

.slide:nth-child(1) {
  background: linear-gradient(135deg, #ff7a45, #ffb38a);
}

.slide:nth-child(2) {
  background: linear-gradient(135deg, #4dabf7, #74c0fc);
}

.slide:nth-child(3) {
  background: linear-gradient(135deg, #51cf66, #8ce99a);
}

.slide h3 {
  font-size: 22px;
  position: relative;
  z-index: 1;
}

.slide p {
  font-size: 15px;
  opacity: 0.95;
  position: relative;
  z-index: 1;
}

.carousel-dots {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.carousel-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition), width var(--transition);
}

.carousel-dots button:hover {
  background: rgba(255, 255, 255, 0.8);
  transform: scale(1.2);
}

.carousel-dots button.active {
  background: #fff;
  width: 24px;
  border-radius: var(--radius-pill);
}

/* ===== Section ===== */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px;
  position: relative;
}

.section-alt {
  background: var(--bg-alt);
  max-width: none;
  border-radius: 0;
}

.section-alt > * {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 28px;
  color: var(--text-strong);
  margin-bottom: 10px;
  font-weight: 800;
  letter-spacing: -0.4px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 26px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--primary), var(--primary-light));
}

.section-sub {
  color: var(--text-faint);
  margin-bottom: 28px;
  font-size: 15px;
  padding-left: 16px;
}

.section h3 {
  color: var(--text-strong);
}

.section p {
  color: var(--text-muted);
}

/* ===== Grids ===== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

/* ===== Card ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-soft);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  font-size: 19px;
  margin-bottom: 10px;
  color: var(--text-strong);
  font-weight: 700;
}

.card p {
  color: var(--text-muted);
  font-size: 15px;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 22px;
  transition: transform var(--transition), background var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(-6deg);
  background: linear-gradient(135deg, #ffe0d0, #fff0e8);
}

/* ===== Article List ===== */
.article-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.article-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.article-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--primary-light));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.article-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-soft);
}

.article-item:hover::after {
  transform: scaleY(1);
}

.article-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--text-strong);
  font-weight: 700;
  transition: color var(--transition);
}

.article-item:hover h3 {
  color: var(--primary-dark);
}

.article-meta {
  font-size: 13px;
  color: var(--text-ghost);
  margin-bottom: 10px;
}

.article-item p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.article-item a {
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition), color var(--transition);
}

.article-item a:hover {
  gap: 8px;
}

/* ===== FAQ ===== */
.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  background: var(--card-bg);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.faq-item:hover {
  border-color: var(--border-soft);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-q {
  width: 100%;
  text-align: left;
  padding: 16px 20px;
  background: transparent;
  border: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-strong);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-family: inherit;
  transition: color var(--transition), background var(--transition);
}

.faq-q:hover {
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.faq-a {
  padding: 0 20px 18px;
  color: var(--text-muted);
  font-size: 15px;
  display: none;
  animation: fadeSlideIn 0.35s ease;
}

.faq-item.open .faq-a {
  display: block;
}

.faq-caret {
  transition: transform var(--transition);
  color: var(--primary);
  font-size: 14px;
  flex-shrink: 0;
}

.faq-item.open .faq-caret {
  transform: rotate(180deg);
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== HowTo ===== */
.howto-step {
  display: flex;
  gap: 16px;
  margin-bottom: 18px;
  padding: 16px;
  border-radius: 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.howto-step:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
  border-color: var(--border-soft);
}

.howto-num {
  flex: 0 0 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff7a45, #ffb38a);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: 0 6px 14px rgba(255, 122, 69, 0.3);
  transition: transform var(--transition);
}

.howto-step:hover .howto-num {
  transform: scale(1.1) rotate(-8deg);
}

.howto-step h4 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--text-strong);
}

.howto-step p {
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.contact-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.contact-item::before {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 179, 138, 0.22), transparent 70%);
  transition: transform var(--transition);
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-soft);
}

.contact-item:hover::before {
  transform: scale(1.6);
}

.contact-item h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text-strong);
  position: relative;
}

.contact-item p {
  font-size: 14px;
  color: var(--text-muted);
  position: relative;
}

/* ===== Footer ===== */
.footer {
  background: linear-gradient(180deg, #2b2b2b, #1f1f1f);
  color: #cfcfcf;
  padding: 40px 20px 20px;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #ff7a45, #ffb38a, #4dabf7, #51cf66);
  background-size: 300% 100%;
  animation: gradientShift 8s linear infinite;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 300% 50%;
  }
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.footer h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 12px;
  font-weight: 700;
}

.footer a {
  color: #cfcfcf;
  font-size: 14px;
  display: block;
  margin-bottom: 8px;
  transition: color var(--transition), transform var(--transition), padding-left var(--transition);
}

.footer a:hover {
  color: #ffb38a;
  padding-left: 6px;
}

.footer-bottom {
  max-width: 1200px;
  margin: 26px auto 0;
  padding-top: 18px;
  border-top: 1px solid #444;
  font-size: 13px;
  color: #999;
  text-align: center;
}

.footer-bottom p {
  color: #999;
}

/* ===== Back Top ===== */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff7a45, #ff9466);
  color: #fff;
  border: 0;
  cursor: pointer;
  font-size: 20px;
  display: none;
  z-index: 200;
  box-shadow: 0 8px 20px rgba(255, 122, 69, 0.4);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  animation: pulseGlow 2.4s ease-in-out infinite;
}

.back-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 14px 30px rgba(255, 122, 69, 0.55);
  filter: brightness(1.06);
}

@keyframes pulseGlow {
  0%,
  100% {
    box-shadow: 0 8px 20px rgba(255, 122, 69, 0.4);
  }
  50% {
    box-shadow: 0 8px 26px rgba(255, 122, 69, 0.65);
  }
}

/* ===== Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== Sitemap / Links ===== */
#sitemap .card h3 a,
#links .card h3 a {
  color: var(--text-strong);
  transition: color var(--transition);
}

#sitemap .card h3 a:hover,
#links .card h3 a:hover {
  color: var(--primary-dark);
}

/* ===== Dark Mode ===== */
body.dark {
  --bg: #121212;
  --bg-alt: #1a1a1a;
  --text: #e0e0e0;
  --text-strong: #f0f0f0;
  --text-muted: #b8b8b8;
  --text-faint: #999;
  --text-ghost: #888;
  --border: #333333;
  --border-soft: #444444;
  --card-bg: #242424;
  --primary-soft: #2e211a;
  --glass-bg: rgba(26, 26, 26, 0.78);
  --glass-border: rgba(51, 51, 51, 0.8);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
  background: #121212;
  color: #e0e0e0;
}

body.dark::before {
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 122, 69, 0.12), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(77, 171, 247, 0.08), transparent 46%),
    radial-gradient(circle at 50% 100%, rgba(255, 179, 138, 0.06), transparent 55%);
}

body.dark .header {
  background: var(--glass-bg);
  border-color: var(--glass-border);
}

body.dark .nav a {
  color: #bbb;
}

body.dark .nav a:hover {
  color: #ffb38a;
}

body.dark .card,
body.dark .article-item,
body.dark .faq-item,
body.dark .contact-item,
body.dark .faq-q,
body.dark .howto-step {
  background: #242424;
  border-color: #333;
  color: #e0e0e0;
}

body.dark .card:hover,
body.dark .article-item:hover,
body.dark .contact-item:hover,
body.dark .howto-step:hover {
  border-color: #555;
}

body.dark .faq-q:hover {
  background: #2e211a;
  color: #ffb38a;
}

body.dark .section-alt {
  background: #1f1f1f;
}

body.dark .hero h1,
body.dark .section-title,
body.dark .card h3,
body.dark .article-item h3,
body.dark .faq-q,
body.dark .contact-item h4,
body.dark .howto-step h4,
body.dark .section h3 {
  color: #f0f0f0;
}

body.dark .hero p,
body.dark .card p,
body.dark .article-item p,
body.dark .faq-a,
body.dark .contact-item p,
body.dark .howto-step p,
body.dark .section p {
  color: #bbb;
}

body.dark .section-sub {
  color: #999;
}

body.dark .search-box {
  background: #242424;
  border-color: #444;
}

body.dark .search-box input {
  color: #e0e0e0;
}

body.dark .search-box input::placeholder {
  color: #777;
}

body.dark .menu-toggle {
  background: #242424;
  border-color: #444;
  color: #e0e0e0;
}

body.dark .card-icon {
  background: #2e211a;
}

body.dark .card:hover .card-icon {
  background: linear-gradient(135deg, #3a2a20, #2e211a);
}

body.dark .footer {
  background: linear-gradient(180deg, #1a1a1a, #0f0f0f);
}

body.dark .footer-bottom {
  border-color: #333;
}

body.dark a {
  color: #ffb38a;
}

body.dark a:hover {
  color: #ff7a45;
}

body.dark #sitemap .card h3 a,
body.dark #links .card h3 a {
  color: #f0f0f0;
}

body.dark #sitemap .card h3 a:hover,
body.dark #links .card h3 a:hover {
  color: #ffb38a;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 32px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 28px;
  }

  .grid-3,
  .grid-2,
  .article-list,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    flex-direction: column;
    padding: 16px 20px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    animation: menuDrop 0.3s ease;
  }

  .nav.open {
    display: flex;
  }

  @keyframes menuDrop {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .menu-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 28px;
  }

  .search-box input {
    width: 100px;
  }

  .section {
    padding: 36px 16px;
  }

  .section-title {
    font-size: 23px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 10px 14px;
  }

  .logo {
    font-size: 19px;
  }

  .logo-badge {
    width: 34px;
    height: 34px;
    font-size: 17px;
  }

  .hero {
    padding: 20px 14px 10px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .hero p {
    font-size: 15px;
  }

  .hero-stats {
    gap: 18px;
  }

  .stat-num {
    font-size: 22px;
  }

  .slide {
    padding: 26px 20px;
    min-height: 220px;
  }

  .slide h3 {
    font-size: 19px;
  }

  .section {
    padding: 28px 14px;
  }

  .section-title {
    font-size: 21px;
    padding-left: 14px;
  }

  .section-title::before {
    width: 5px;
    height: 22px;
  }

  .section-sub {
    padding-left: 14px;
  }

  .card {
    padding: 18px;
  }

  .article-item {
    padding: 16px;
  }

  .search-box input {
    width: 70px;
    padding: 7px 10px;
  }

  .search-box button {
    padding: 7px 12px;
  }

  .howto-step {
    padding: 12px;
  }

  .howto-num {
    flex: 0 0 34px;
    height: 34px;
    font-size: 14px;
  }

  .back-top {
    right: 14px;
    bottom: 14px;
    width: 42px;
    height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .header,
  .back-top,
  .carousel-dots,
  .menu-toggle {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .article-item {
    break-inside: avoid;
  }
}